Bummer! You have been redirected as the page you requested could not be found.

Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

C# ASP.NET MVC Basics Modeling and Presenting Data Updating the Controller

Still receiving parameter error after casting the id parameter

During the video. I added id.Value to make id an explicit cast so the website will not throw an error. However, it still does. Here is my source code.

(Disregard WebApplication1, that is the name that I've been using for the namespace as I can't figure out how to delete the original one that I messed up on before.

using WebApplication1.Models; using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using WebApplication1.Data;

namespace WebApplication1.Controllers { public class ComicBooksController : Controller {

    private ComicBookRepository _comicBookRepository = null;

    public ComicBooksController()
    {
        _comicBookRepository = new ComicBookRepository();
    }
    public ActionResult Detail(int? id)
    {
        if (id == null)
        {
            return HttpNotFound();
        }
        var comicBook = _comicBookRepository.GetComicBook(id.Value);

        return View(comicBook);

    }
}

}

1 Answer

Steven Parker
Steven Parker
231,275 Points

For those of us who don't happen to be working on the same project, it helps if you make a snapshot of your workspace and post the link to it here.